oil cooler
31 May 2007, 12:32 AM
#1
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oil cooler
hey guys
have a MY00 uk turbo classic running 325bhp with a fmic. Oil has hit maximum of 115C on a hot day last week and got me a bit worried.
was thinking of getting an oil cooler fitted to be on the safe side, but dont know much about them. would appreciate any feedback on those of you who have one. are they worth it, how much lower will the oil run and how much and where is the best place to have it fitted. cheers. nitin
have a MY00 uk turbo classic running 325bhp with a fmic. Oil has hit maximum of 115C on a hot day last week and got me a bit worried.
was thinking of getting an oil cooler fitted to be on the safe side, but dont know much about them. would appreciate any feedback on those of you who have one. are they worth it, how much lower will the oil run and how much and where is the best place to have it fitted. cheers. nitin
31 May 2007, 01:37 AM
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I cant help with the temps but you might find a few people warn you away from large coolers & lengthy pipework as it reduces oil press'. I would argue this as I run a mahoosive HKS cooler with around 2-3m hose & keep a good 5-6bar normal running, you should monitor this b4 & after if you fit one. Also if you are going to buy one then I would advise you avoid the cheap varietys & go for proven designs.
31 May 2007, 08:39 AM
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Got a Mocal one too, fitted by Paul @ Zen Performance. Before fitted, track day temps were running around 110 degrees, after fitting, only up to 100! On road, doesn't get above 95. I have a thermostatic one with filter relocation, running an uprated RCM oil pump to get over any pressure issues.
31 May 2007, 10:14 AM
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31 May 2007, 10:17 AM
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Another vote for Mocal. I had one on my old Clio and it totally controlled oil temps under any condition - quarter miling, fast road, track driving. Under hard use it would normally run up to 120-130C oil temps, once the cooler was on, the most I ever saw was 100C on a long autobahn cruise at 130-140mph. Had an oilstat in the sandwich plate, a run of about a metre to the 16-row cooler and a metre back again, never had any problems with it at all, apart from obviously there is now more oil in the system so you might need to adjust your dipstick a little.
Definitely worthwhile if you've got oil temp problems and has the added bonus of keeping the whole engine cooler as well - I found my water temps were better controlled.
Definitely worthwhile if you've got oil temp problems and has the added bonus of keeping the whole engine cooler as well - I found my water temps were better controlled.
31 May 2007, 12:10 PM
#11
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31 May 2007, 04:14 PM
#12
I've been toying with fitting a mocol oil cooler for some time, but always been concerned about airlocks being generated during oil changes.
From what I've read, think i'm correct in saying, it appears that the oil return outlet on the rad. needs to be sited higher than the inlet to push out any air...but, being a little unsure, I thought I'd see what effect simply relocating the oil filter away from the hot exhaust manifold and into a cooler area with airflow to it would have, as I'd seen lower oil temps when running without an undertray on...
I've now been running for a couple of mths. with this now and have experienced a drop in temps similar to that without the undertray, around 10degrees C.
Oil pressure remains the same as before at tickover [4bar] but there is a slight drop at higher revs, 5.9bar, was 6.3, but this would probably be improved with a shorter pipe run...I had to relocate to the nearside inner wing as the offside is full of fmic pipework. FWIW I'll proberbly eventually fit the rest of the kit
[oil rad and sandwich plate/stat] once sure of the oil change, priming/bleeding proceedure, but thought I'd try this first and share it with you all
From what I've read, think i'm correct in saying, it appears that the oil return outlet on the rad. needs to be sited higher than the inlet to push out any air...but, being a little unsure, I thought I'd see what effect simply relocating the oil filter away from the hot exhaust manifold and into a cooler area with airflow to it would have, as I'd seen lower oil temps when running without an undertray on...
I've now been running for a couple of mths. with this now and have experienced a drop in temps similar to that without the undertray, around 10degrees C.
Oil pressure remains the same as before at tickover [4bar] but there is a slight drop at higher revs, 5.9bar, was 6.3, but this would probably be improved with a shorter pipe run...I had to relocate to the nearside inner wing as the offside is full of fmic pipework. FWIW I'll proberbly eventually fit the rest of the kit
[oil rad and sandwich plate/stat] once sure of the oil change, priming/bleeding proceedure, but thought I'd try this first and share it with you all
31 May 2007, 04:31 PM
#13
i have similair to yours s5coob,it was already like it when i imported it,at 1st i was searching for the rad part of the cooler for like 10 mins, then just assumed they reelocated without fittiing a rad.
in nthe summer i hit 95 max,which isnt bad,it was at 40 before i even started the car onn the hottest day !
my filter is behind the driveersside headlight
in nthe summer i hit 95 max,which isnt bad,it was at 40 before i even started the car onn the hottest day !
my filter is behind the driveersside headlight
01 June 2007, 01:14 PM
#18
Minty, I'd planned to position my cooler where the tmic used to be, got as far as a trial fit...
But, having since found out that the outlet needs to be positioned higher than the inlet, I either need to place it elsewhere or get a differently shaped rad.
Good job I had it given to me
01 June 2007, 10:31 PM
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will prime the pipes and the rad first, will be a small air lock but nothing unmanageable 
I expect 0.5-1 bar drop (have an RCM pump but that doesnt really increase pressure)
hardest part is messing around with the modene and blocking off associated water feeds
I expect 0.5-1 bar drop (have an RCM pump but that doesnt really increase pressure)
hardest part is messing around with the modene and blocking off associated water feeds
12 June 2007, 01:56 PM
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Is it really just an issue of the oil filter being by the exhaust pipes? I have all my pipes wrapped and an cool air feed going to the filter and yet i still see the same temps...98 deg norm running, 105 pushing some and once had 110 really kicking it for ages...
Not sure about oil cooler with this air locks issue...
Not sure about oil cooler with this air locks issue...
12 June 2007, 04:15 PM
#28
stupid question time, perhaps...
Why are you guys scared of air locks? Would it stop the oil rotating correctly through the system?
What kind of design do car manufacturers employ in the block etc to stop this occuring post oil change on a normal engine? Doesn't all the oil end up in the sump after you turn the engine off anyway (replaced with a whole load of air, further up the block)?
Sorry for numpty questions, I'm just trying to learn
Why are you guys scared of air locks? Would it stop the oil rotating correctly through the system?
What kind of design do car manufacturers employ in the block etc to stop this occuring post oil change on a normal engine? Doesn't all the oil end up in the sump after you turn the engine off anyway (replaced with a whole load of air, further up the block)?
Sorry for numpty questions, I'm just trying to learn
12 June 2007, 04:18 PM
#29
Is it really just an issue of the oil filter being by the exhaust pipes? I have all my pipes wrapped and an cool air feed going to the filter and yet i still see the same temps...98 deg norm running, 105 pushing some and once had 110 really kicking it for ages...
Not sure about oil cooler with this air locks issue...
Not sure about oil cooler with this air locks issue...
The real reason may be the pipe run outside of the block, which probably cools the oil down as the oil has time to radiate away some heat whilst it's outside the block.
Note: Purely speculating above
22 June 2007, 09:48 AM
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Okay chap, I still think I'll be going the hole hog and having a rad included...
it will calm my nerves on my first ever track day...
If you have a sandwich plate job but filter in same location, I guess you'll not be able to empty the oil in the cooler assembly during oil changes? Anyone come across this issue and how did you get around it?
it will calm my nerves on my first ever track day...
If you have a sandwich plate job but filter in same location, I guess you'll not be able to empty the oil in the cooler assembly during oil changes? Anyone come across this issue and how did you get around it?